This document discusses e-learning, including its definition as electronic learning using computers and web technology. It outlines several modes of e-learning like web-based learning, virtual classrooms, and webinars. The advantages of e-learning are easy access, flexibility, and different learning styles, while disadvantages include costs, lack of equipment, and feeling of isolation. Common e-learning tools are YouTube, Gmail, and PowerPoint. The key difference between classroom and online learning is that e-learning saves time and allows learning anywhere, while traditional learning is limited to the classroom. COVID-19 has led to widespread school closures and a rise in online learning globally.